<template>
  <div>
<!--    顶部滑动区域-->
    <div id="slider" class="mui-slider">
      <div id="sliderSegmentedControl"
           class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
        <div class="mui-scroll">
          <a :class="['mui-control-item', item.id == 0 ? 'mui-active' : '']"  v-for="item in categories" :key="item.id" @click="getPhotoListByCateId(item.id)">
            {{item.title}}
          </a>
        </div>
      </div>

    </div>


    <ul class="photo-list">
      <router-link v-for="item in list" :key="item.id" :to="'/home/photoinfo/'+item.id" tag="li">
        <img v-lazy="item.img_url">
        <div class="info">
          <h1 class="info-title">{{item.title}}</h1>
          <div class="info-body">{{item.zhaiyao}}</div>
        </div>
      </router-link>
    </ul>
  </div>
</template>

<script>
  import mui from '../../lib/mui/js/mui.min.js'
  import {Toast} from 'mint-ui'
  export default {
    data() {
      return {
        categories: [],//所有顶部分类数据
        list:[]//所有图片信息
      }
    },
    created(){
      this.gteGategory()
      this.getPhotoListByCateId(0)
    },
    methods: {
      gteGategory() {//获取所有顶部分类数据
        this.$http.get('api/getimgcategory').then(result => {
          if (result.body.status === 0) {
            var cty = {
              id:0,
              title:'全部'
            }

            this.categories = result.body.message
            this.categories.unshift(cty)
          } else {
            Toast('获取顶部分类失败')
          }
        })
      },
      getPhotoListByCateId(Cateid){
        this.$http.get('api/getimages/' + Cateid).then(result => {
          if (result.body.status === 0) {
            this.list = result.body.message
          } else {
            Toast('获取图片失败')
          }
        })
      }
    },
    mounted() {//当页面已经渲染到浏览器页面上后才能选中
      mui('.mui-scroll-wrapper').scroll({
        deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
      });
    }
  }
</script>

<style scoped lang="scss">
  * {
    touch-action: pan-y;
  }

  /*img[lazy=loading] {*/
  /*  width: 40px;*/
  /*  height: 300px;*/
  /*  margin: auto;*/
  /*}*/

  .photo-list{
    list-style: none;
    margin: 0;
    padding: 10px;
    padding-bottom: 0;
    li {
      background-color: #ccc;
      text-align: center;
      margin-bottom: 10px;
      box-shadow: 0 0 9px #999;//边框暗淡
      position: relative;
      img {
        width: 100%;
        vertical-align: middle;
      }
      img[lazy="loading"] {
        width: 40px;
        height: 300px;
        margin: auto;
      }

      .info {
        color: white;
        text-align: left;
        position: absolute;
        bottom: 0;
        background-color: rgba(0, 0, 0, 0.4);//背景透明
        max-height: 84px;//最大高度
        .info-title {
          font-size: 14px;
        }
        .info-body {
          font-size: 13px;
        }
      }
    }
  }
</style>